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  1. (*steve*)

    20 ohms

    Ok, time for a basic lesson about inductors. You clearly understand what a resistor does. It (in non mathematical terms) "resists" the flow of current based on the instantaneous voltage. (yeah, "flow of current" is like "ATM machine"). You're also aware that this results in heat being generated...
  2. (*steve*)

    Running 3A component from two 2As?

    it might work fine. It might burn out. it depends on what it is
  3. (*steve*)

    Trouble shooting a an old DCV Converter

    Aaaah... " Troubleshooting", not "trouble shooting".
  4. (*steve*)

    How to find Area of Hysteresis?

    try googling for "how do i calculate the area of a parallelogram?"
  5. (*steve*)

    How to find Area of Hysteresis?

    One approximate method is to simplify it into a parallelogram
  6. (*steve*)

    Bridge rectifier melted.

    The diode junctions probably have an absolute max temperature of 150C. Let's assume an ambient temperature of 40C. This means the junction can rise 110C above ambient. Let's also assume the regulator needs to dissipate 80W of heat. This means that for every watt of heat the temperature can...
  7. (*steve*)

    Bridge rectifier melted.

    The only way? Glad to know that's how real engineers do it Colin.
  8. (*steve*)

    Newb question about voltage dividers

    Hey, it's only a 6 year old question!
  9. (*steve*)

    Newb question about voltage dividers

    A voltage divider with one resistor is like a seesaw with the pivot at one end rather than the middle. assuming a load impedance far greater than the resistor value, the resistor does not reduce the level at all. A voltage divider is designed to give a relatively constant portion of its input...
  10. (*steve*)

    Bridge rectifier melted.

    Colin, I'm not arguing that there's likely to be 2v or more across the bridge at full load. However your abrasive attitude is not conducive to getting people to agree with you. The main problem here appears to be a total lack of heatsinking rather than inadequate heatsinking due to a...
  11. (*steve*)

    PCB alternatives

    you can make acceptable quality boards at home. Here is an example. (its only a quick prototype) Sure, I might go to a pcb manufacturer if I wanted quantity, or if I needed multiple layers, or plated through holes, or lots of holes, or a really complex design with very fine traces (these are...
  12. (*steve*)

    ForkLift Gokart

    Lets see if we can summon him... @Gryd3
  13. (*steve*)

    LED strip power supply

    you may find that for step lighting that you want to operate them at reduced intensity. This will also yield a much longer lifetime. Assuming these have integral resistors you'll be able to connect them all up in parallel. get a power supply which allows you to adjust the output voltage. This...
  14. (*steve*)

    My Modified Router

    Just a very thin smear of epoxy. If you use thermal paste the epoxy won't stick :-) thermal paste is simply designed to fill the small voids that would otherwise be filled with air. The epoxy will do the same job. The main difference is that thermal paste is not a permanent adhesive.
  15. (*steve*)

    My Modified Router

    Yeah, there's plenty of small heatsinks on ebay. You can simply epoxy them to the top of the chips.
  16. (*steve*)

    My Modified Router

    so, are you changing the power through software settings or a hardware mod? I'd probably add heatsinks to the chips which run at elevated temperatures.
  17. (*steve*)

    Need Help regarding 12v DC Motor

    No.
  18. (*steve*)

    Trouble with multiple voltage dividers

    Firstly, multiple voltage dividers like that will give you a lower voltage than you expect. Secondly, the diode drop will probably exceed the remaining voltage. However, you're seeing a higher voltage. I expect the ground connection(s) to your voltage divider are failing in some way (poor...
  19. (*steve*)

    Use a schmitt trigger for turn on / off slowly LEDs with an automatic duty cycle

    I don't understand. What is your problem?
  20. (*steve*)

    Complete electronic virgin!

    Yeah, the reversing camera "curves" the overlay on the rear facing camera as the wheels turn, but the front facing sensors don't even try to do the same thing. I guess one is electronic ant the other may be more mechanical, but one actually interfaces with the car controls.
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